## ELECTRICAL TECHNOLOGY

 SHE Level 1 SCQF Credit Points 20.00 ECTS Credit Points 10.00 Module Code M1H602907 Module Leader n/a School School of Computing, Engineering and Built Environment Subject Electrical Power Engineering Trimester B (January start)

### Pre-Requisite Knowledge

Standard entry qualifications or equivalent

### Summary of Content

The aim of this module is to develop in the student an understanding of the basic concepts and principles of electrical engineering and apply these principles to solve engineering problems required for initial design activities. in building services engineering. It provides the student with the basic knowledge of ac and dc circuit analysis, electric and magnetic field theory and an introduction to electrical installation and circuits.

### Syllabus

Passive DC Circuits: Introduction to electrical quantities: current, voltage, resistance, conductance, power. Voltage sources and current sources. Ohms Law. Combination of series and parallel circuits. Kirchhoff's Laws. Mesh current method to solution of circuits. Network Theorems: Thevenin's, Norton's, Superposition and Maximum Power Transfer theorems. Introduction to ECAD tools to solve networks. Electrical and Magnetic Fields: Coulomb's law. Forces between changes. Electric fields and electric flux density. Gauss's law. Electric potential and potential difference. Magnetic flux, magnetomotive force, flux density, permeability and reluctance. The B-H curve and hysteresis. Ampere's law. Ohms law for magnetic circuits. Series and parallel magnetic circuits. Faraday's and Lenz's laws. Force on a current-carrying conductor. Torque on a current loop. Applications: Galvanometers, loudspeaker, basic motor, transformers. Energy Storage and Dynamic Circuits: Capacitance: types of capacitors, voltage-current relationship. Capacitance and the storage of charge and energy. R-C transient response. Parallel an series combinations of capacitors. Inductors: Mutual inductance, Self-inductance, types of inductors, current-voltage relationships. R-L transients, inductors in series and in parallel. Energy stored in an inductor. AC Circuits: Sinusoidal alternating waveforms. Sinusoidal ac voltage generation. The sinewave, general format for the sinusoidal voltage and current in the time domain. Phase relations, instantaneous values, average values and rms values. ac meters. Characteristics of the ac response in the time domain. The concept of Phasor. Passive components: Impedances of resistors, capacitors and inductors. The ac circuit in the phasor domain. Reactances, Admittances, Susceptances. Kirchhoff's laws in the phasor domain. Conversion from phasor domain to time domain and from time domain to phasor domain. Steady state response of R-C, R-L, RLC series and parallel networks. Frequency response and resonance of series and parallel networks. Network theorems applied to ac circuits. Three-Phase: Reasons for adopting three-phase AC supply; Star and delta connection of generators and loads. Representative phase. Analysis of representative phase in terms of complex voltage, current and impedances. Three-phase active, reactive and apparent powers, power factor, voltage regulation. Plant: Machines, basic principles and characteristics. Electrical: Introduction to various electrical accessories, cables, wiring diagrams, trunking, cable rating, etc

### Learning Outcomes

On the completion of this module the student should be able to:-- Understand the concept of current, voltage, power sources and electrical loads.- Understand Kirchhoffs Laws and its application to solve dc and ac circuits.- Apply Thevenin's, Norton's, Superposition and Maximum power transfer theorems to the solution of steady state networks.- Understand the concept of electric and magnetic fields and solve simple electric and magnetic fields problems.- Describe the application of different electical machines to building services pplications.- Use Simulation tools to solve ac and dc networks.

### Teaching / Learning Strategy

Lectures will be used to convey basic concepts and principles with explanatory examples. The material covered during lectures will be reinforced and consolidated through tutorials. Practical work in the laboratory will be used to encourage team work, enhance understanding and application of the electronic and electrical principles. ECAD and CBL tools will be used for consolidation of circuit analysis. Private study by students on relevant topics will reinforce the material delivered in this module. Independent study will be encouraged to satisfy the student's particular interests. Three-Phase: Reasons for adopting three-phase AC supply; Star and delta connection of generators and loads. Representative phase. Analysis of representative phase in terms of complex voltage, current and impedances. Three-phase active, reactive and apparent powers, power factor, voltage regulation. Plant: Machines, basic principles and characteristics. Electrical: Introduction to various electrical accessories, cables, wiring diagrams, trunking, cable rating, etc

"Introductory Circuit Analysis", R L Boylestad, Tenth Edition ,Prentice Hall, 2003. "Electric Circuits", J W Nilsson, Sixth Edition, Prentice Hall, 2000 "Electrical Circuit Theory and Technology", J O Bird, Newnes, 2003 "Schematic Capture using Microsim P Spice, M Hermiter, Prentice Hall 2000 Electrical & Electronic Technology, E Hughes, Pearson, 2005

### Transferrable Skills

Use of ECAD tools to analyse a theoretical model. Write a report.

### Module Structure

Activity Total Hours
Independent Learning (FT) 108.00
Tutorials (PT) 12.00
Tutorials (FT) 24.00
Assessment (FT) 20.00
Practicals (PT) 12.00
Lectures (FT) 24.00
Practicals (FT) 24.00
Independent Learning (PT) 144.00
Assessment (PT) 20.00
Lectures (PT) 12.00

### Assessment Methods

Component Duration Weighting Threshold Description
Coursework 0.00 20.00 35% Minor Assessment
Coursework 0.00 20.00 35% Lab Based Assessment
Exam (Exams Office) 2.00 60.00 35% Exams Office Exam